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<TITLE>Getting the Subject and Issuer Distinguished Names of an X509 Certificate
(Java Developers Almanac Example)
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  <h3>
    e227.  
    Getting the Subject and Issuer Distinguished Names of an X509 Certificate</h3>

This example lists the subject and issuer distinguished names of the
certificates in a keystore.  To load a keystore, see
<a href="../java.security/ListAliases.html" class="eglink"><font size="-1"><b>e208</b> Listing the Aliases in a Key Store</font></a>.


<pre>
    try {
        // List the aliases
        Enumeration enum = <font color="#0066ff"><i>keystore</i></font>.aliases();
        for (; enum.hasMoreElements(); ) {
            String alias = (String)enum.nextElement();
    
            java.security.cert.Certificate cert = <font color="#0066ff"><i>keystore</i></font>.getCertificate(alias);
            if (cert instanceof X509Certificate) {
                X509Certificate x509cert = (X509Certificate)cert;
    
                // Get subject
                Principal principal = x509cert.getSubjectDN();
                String subjectDn = principal.getName();
    
                // Get issuer
                principal = x509cert.getIssuerDN();
                String issuerDn = principal.getName();
            }
        }
    } catch (KeyStoreException e) {
    }
</pre>
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            &nbsp;Related Examples
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e223. <a class="eglink" href="CreateCert.html?l=rel">
    Creating a New Key Pair and Self-signed Certificate Using keytool
</a>
<br>

e224. <a class="eglink" href="ExportCert.html?l=rel">
    Exporting a Certificate to a File
</a>
<br>

e225. <a class="eglink" href="ImportCert.html?l=rel">
    Importing a Certificate from a File
</a>
<br>

e226. <a class="eglink" href="ListCertFact.html?l=rel">
    Listing All Available Certificate Formats
</a>
<br>


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        See also: 
<a class="eglink" href="/egs/java.security.cert/pkg.html?l=rel#Certification%20Paths">
    Certification Paths
</a>&nbsp;&nbsp;

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